Barazani, Oz

Golan-Goldhirsh, Avi

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Salt Driven Interactions between Salsola inermis and Pistacia lent Oz Barazani Israel Gene Bank for Agricultural Crops, Israel Avi Golan-Goldhirsh Ben‐Gurion University of the Negev, Israel Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/2-1/3 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]298　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　Grasslands/Rangelands Resources and Ecology ——— Soil Quality and Plant NutritionSalt driven interactions between Salsola inermis and Pistacia lentBaraz ani Oz 倡 and Golan‐Goldhirsh A v i倡 Present address :Israel Gene Bank f or A gricultural crops( IGB)In stitute o f Field & Garden CropsP .O .Boxb ,Bet Dagan 50250 , IsraelBen‐Gurion University o f the Negev ,Jacob Blaustein Institutes f or Desert Research ,A lbert K atz Department o f Dry landBiotechnologies ,Desert Plant Biotechnology L aboratory ,Sede Boqer Campus ８４９９０ ,Is rael .E‐mail :av igolan＠ bgu .ac .ilKey words : salinity , Pistacia , SalsolaIntroduction In the live germplasm collection of Pistacia spp . ( Anacardiaceae ) , at the Jacob Blaustein Institutes for DesertResearch , Ben‐Gurion University of the Negev , Israel , Salsola inermis ( Chenopodiaceae) grows around trees of Pistacia spp .(６０ ～ １００ cm from the trunk) , but its grow th in the vicinity of P . lentiscus was inhibited . P . lentiscus is an evergreen aromaticbig Mediterranean shrub , rich in resin and essential oil , composed mainly of the monoterpenes α‐pinene , limonene , sabinene ,and the sesquiterpene germacrene D ( Barazani et al . ２００３ ) . Monoterpenes and sesquiterpenes such as α and β pinene ,camphene , limonene , α‐phellandrene , pulegone and camphor are known to possess phytotoxic effect . Moreover , theallelopathic effect of some plants was reported to be associated with the release of essential oil to the soil .S . inermis is an annual which germinates in the beginning of winter , develops during summer , flowers and produces seeds inautumn . It grows in big patches , and its distribution is limited to saline and disturbed habitats in arid regions . It was assumedthat allelopathy is involved in grow th inhibition of S . inermis around P . lentiscus . In this study , we aimed to test the nature ofthese interactions .Materials and methods The Pistacia spp . germplasm collection field is located in the Negev desert highland of Israel . Theaverage yearly rainfall is ９０ mm , concentrated in the winter months ( November to March) . Summer and winter maximum andminimum temperature averages are ３５ and ２０ ０C and １５ and ０ ０C , respectively . Plants of Pistacia were planted during autumnof １９９６ and are growing in loess soil , under the same environmental conditions for the last １０ years ( Golan‐Goldhirsh andKostiukovsky , １９９８ ) . During the dry season ( April‐November) , plants are irrigated by drip irrigation ( Netafim , Israel) twiceweekly , and as necessary during winter . Germination of Salsola inermis occurs during winter . Then , wide patches of seedlingsare observed in the field . All analyzes reported were conducted during the growing season of S . inermis in summer of ２００２ .Results and discussion The grow th of Salosla inermis plants is inhibited in the vicinity of the evergreen Pistacia lentiscus , butnot around deciduous P . atlantica and P . chinensis . The study of this observation at the Pistacia spp . germplasm collection atthe Jacob Blaustein Institute for Desert Research , Israel , is reported in this paper . In v itro bioassays did not reveal allelopathiceffect . Moreover , germination of S . inermis seeds on filter paper moistened with P . lentiscus‐soil filtrate was twice as high asthat in deciduous trees‐soil filtrates . Nevertheless , fresh and dry weights of mature S . inermis growing next to P . atlanticaand P . chinensis was ２ .９ to ４ .８ times higher than that of plants growing in the vicinity of P . lentiscus . Conductivitymeasurements in summer , during the grow th season of S . inermis , indicated that soil salinity beneath deciduous Pistacia treeswas １６ .５ ～ １７ .５ mS and below P . lentiscus was ２ .５ mS . It is therefore proposed that salt depletion in the vicinity of P .lentiscus inhibits its grow th , pointing to the halophylic nature of S . inermis .In an hydroponic experiment , young seedlings of P . lentiscus grew for a month in a medium containing NaCl at ５０ and １００mM , not showing stress symptoms . In addition , no significant differences ( p ＞ ０ .０５ ) were found in stomatal conductancebetween plants growing in control and in salt treatments , although a trend of decline was obtained at １００ mM . The resultsindicated that P . lentiscus is able to tolerate and accumulate salt , which contributes to its wide distribution along theMediterranean coast .ReferencesBarazani , O . , Dudai , N . and Golan‐Goldhirsh , A . ２００３ . Comparison of Mediterranean Pistacia lentiscus genotypes byrandom amplified polymorphic DNA , chemical , and morphological analyses . J Chem Ecol ２９ : １９３９ ～ １９５２ .Golan‐Goldhirsh , A . and Kostiukovsky , V . １９９８ . Mediterranean Pistacia genus germplasm collection at Sede Boqer Israel .A cta Hort . ４７０ : １３１ ～ １３７ .

Salt Driven Interactions between \u3cem\u3eSalsola inermis\u3c/em\u3e and \u3cem\u3ePistacia lent\u3c/em\u3e

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=2465&amp;context=igc

Salt Driven Interactions between \u3cem\u3eSalsola inermis\u3c/em\u3e and \u3cem\u3ePistacia lent\u3c/em\u3e

Abstract

Similar works

Full text

Available Versions

University of Kentucky